PowerXology Sense 4 10400mAh Power Bank Fast Charging Dual USB Port external battery portable phone charger for iPhone 6 iPad Phone tablets Fast Charging: only 6.5 hours to fully charge the power bank, adding 5 more full charges to iPhone 5s Portable and Durable: intended for carry in a jeans pocket, well made fire-resistent matte finish free of fingerprints Dual USB and Charge while Discharge: charges 2 mobile devices at the same time and can be charged and discharge simultaneously Compatible and Smart: built-in smart chip automatically adjusts output current based on the connected device, compatible with all popular cell phones and tablets LED indication for Battery Status, dormant when unused to avoid any power waste